Added access to parent prototype via parent property

lib/class.js

@@ -111,6 +111,9 @@ var extend = function()
     // copy the given properties into the new prototype
     prop_copy( props, prototype );
 
+    // reference to the parent prototype (for more experienced users)
+    prototype.parent = base.prototype;
+
     // set up the new class
     attach_extend( new_class );
     new_class.prototype   = prototype;

test/test-class-parent.js

@@ -59,6 +59,11 @@ var SubFoo = Foo.extend(
     {
         return this.__super( arg );
     },
+
+    callParentAlt: function()
+    {
+        return this.parent.myMethod2.apply( this, arguments );
+    },
 });
 
 var foo     = new Foo(),
@@ -100,3 +105,16 @@ assert.equal(
     "Arguments should be passed to super method via _super argument list"
 );
 
+assert.deepEqual(
+    SubFoo.prototype.parent,
+    Foo.prototype,
+    "Parent property should represent parent prototype"
+);
+
+sub_foo.callParentAlt( arg = 'moo' );
+assert.equal(
+    sub_foo.method2Arg,
+    arg,
+    "The parent property may also be used to invoke parent methods"
+);
+